Clutch



Aug. 19 1924.

1,505,312 c. cHlsl-iom QLUTGH Flld 0612. 22. 1920 2 Sheets-Sheet 1 x/EN raf? Aug. 19., 1924. 1,505,312

' C. CHISHOLM Filed Oct. 22. 1920 2 Sheets-Sheet 2 AUIjaMA T/cALLY ,4570A T50 MEMBER 'I bt UIIHHHH )III I @El 7 hwg 11h31 nl (fw/W0@ @mi Eli-'tum 5)/5 rammed aeg. 1s, ieaa. l,655,63l26y i' 1T S ES T y CLIFTON omsnotn, ou CLEVELAND, omo, Assrcnoa To ma AMERICAN MULTI- GRAPH coi/tratar, or CLEVELAND, OHIO, A CORPORATION or'oHIo. y

CLUTCH.

Appucaaon ined october 2z, 1920. seriaifno..418,761.`

To all whom t may oon-cera:

Be it known that I, CLIFTON CHIsHoLM, a citizen o't the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Clutches, of which the following is a full, clear, and exact description, referencefbeing yhad to the accompanying drawings.

This invention relates vto clutch mechanism for various machines where'it is desired to have the clutch automatically disengaged upon some contingency-arising, or manually disengaged at the will kofthe operator. An instance where such a clutch is desirable is address printingv machines, where the clutch should automatically become disengaged on failure of automatically fed paper to arrive at the printing'position, and where it is also desirable, in case of hand-fed paper, to give the machine suc-y cessive operations under the manual control of the operator. f 1

The clutch, shown in the accompanying drawings has been devised to accomplish the above mentioned results ei'ectively and by a small amount of mechanism.vr Such an embodiment of the invention willrbe herek matter more fully described, andthe essen tial novel characteristics, illustrated thereby, will be sunnnarized in the claims. i'

In the drawings, Fig. 1 is an end view oit my clutch and associated mechanism;` Fig. 2 is a detail in cross section as indicated by the line 2-2 in Fig. 1, showing the .trigger mechanism ot the manual control; Fig.

3 is a cross section on an enlarged scale, as indicated by the line r3--3 in` Fig. 4, this view being parallel with Fig. `1 but looking from the opposite direction;` is a plan ot the clutch and associated mechanism; Fig. 5 is a detail in vertical section on the line 5 5 of Fig. 4, but on a smaller scale; Fig. 6 is a cross section kon the plane indicated on the line 6 6 in Fig. 1; Fig. 7 is a view of the end portion of the manually operated disengaging member.,

In the drawings, 10 indicates* a suitable vertical frame plate of the machine; 11,1the

' shaft to be driven underthe control ofthe cates a hand wheel on the shaft for lturning,

it* by hand independently of the clutch;

in Figs. l, 4 and 6 indicates a collar pinned,

or otherwise secured, to the shaft 11, and` e having a flange 21 alongside of the hub k113 of the pulley 12. Slidably mounted in the flange 21 'are pins 28, which have reduced end portions, rigidly secured in a shiftable.

' vcollar 25'.

To operate the clutch automaticallyy I provide .a 4longitudinally shiftable rod 40,rk

which may be moved by mechanism, ,not

shown, 4towardthe` left in'Fig. 4, whenever a contingencyy arises whereit is desiredvto throw the clutch out of engagement.

This rod has aperipheral` groove41 into whichy may extend a membery connectedwith the 1. shifter lever 30,. yAs show-n, this member fis a plate 35 pivotedat 36 tothe lever 3() and guided in a fork 37 of that lever. Secured to this plate isa rod 38 having'a handle 39. f

The yhandle 39 may thus be swung about the clutch lever pin y,31, to engage and disengage ythe clutch and may also be swungabout the pivotiscrew y3,6 in atransverse direction to the direction of movement of the clutch lever.`

idle,'but ify the handle 39, there-showmis swung a slight distance toward the right the notchedv portion 43` of the plate35 will engagethe notch 41, thus placing Lthe shifter Fig. 1 shows the automatic connection` operation until some contingency arises,

causing its d,isengagement. At anytime desired -it may. bemanually disengagedy by withdrawing the hook` 43rom the automatic rod by. means of .they handle 89.

ln kseveral-types ot' machines, vwhen yoperated-under. manual ycontrol, it is i desirable that the shaft shallmalie 'only one rotation upon eachrelease. In addressing machines, j

for instance, vwhere envelopes arek fed `by.

hand, it'isdesirable to ,releasel thermachine for operation coincident withthe lfeeding of l This lever may be drawn into idle position vvengage the lever 50.

`(indicated'by brokenlines in Fig. l) by a foot pedal 52, pivoted at 53 to some suitable support-and having a rod 55 connected to an armr 56 on a sliding rod 57, which is connected with a trigger mechanism adapted to The rod 57 .is vertically slidable in suitable brackets, carried by the frame l0, and is pressed upwardly by a spring 58.

The trigger mechanism shown consists of the bar. 60 pivoted to the upper end of the` rod 57 and carrying a projection 61 adapted to engage the upper edge of the lever 50, a-

lspring 62 urging the arm 60 in this engaging direction. When lthe depression of the pedal 52 draws the trigger mechanism downward, a. shoulder 64 thereon (Fig. 2) engages a cam projection 65 on the frame l0 and pulls the projection 6l out of engagement with the lever 50, whereupon the spring 59 raises the lever 50 to active position.

It results from the above described mechanism that wheneverthe pedal is depressed the lever 50 is drawn down to idle position and then at once springs back to active Vposition. I provide a suitable spring, vacting on Vth-efrod 38'of the shifter'lever, to force the clutch pins into engagement Whenever the lever 50 is drawn down, these pins 'bearing the shaft results.

against the surface of the hub-y until the not-ches 18 come opposite them, whereupon they spring into the notches and rotation of The spring for operating the shifter lever f is indicated in Fig. l at 70. It is a leaf member suitably secured to the plate l() and formed with a return arm to bear against the inner vface ofthe shank 38, the vspringhaving a depression 7l to engage this shank when the shank is'vertical, as shown in Figs. l and 4. -When the shank is tipped to the right to cause the automatic engagement heretofore described, it passes ont of .engagement with the spring 71, being then opposite the .inclined portion 72. In this position the shank 38 .engages a pin .75 on a lever 7 6 and Vswings it toward the right, which shoves down wardly on a link 77 connected. at its lower end with the arm 50. rlhus `when'the automatic engagement, above described'is active the spring! and-'the Varm 50 .are both out of action.

l/Vhen the automatic mechanism is disen gaged, as shown in Fig. l, the spring is tending to engage the clutch, and the arm 50 is active to draw it out of engagement at the end of each rotation. ln such withdrawing operation the pin 28, carried by the shift-able collar 25 and positioned to have substantially the'lowest point when the clutch is to be disengaged, rides on the cam end of the lever 50 and forces the collar 25 away from the pulley hub, thus withdrawing the pins and disconnecting the pulley from the shaft.

It will be seen that my mechanism provides for the automatic control of the clutch. and for the desired manual control by successively controlled rotations, and that the change from one to the other may be made in a very simple manner. Torender the automatic control active the handle 39 is simply shoved rearwardly. To disconnect it and connect'in the manual control, the handle is drawn forward, its shank engaging the pin 7S and restoring the lever 50 to controlling position; then the rotations are controlled by the foot pedal '52, each depression of which insures one rotation. The operator may make a practical continuous rotation by depressing the pedal again just before the completion of a rotation, and such may be the operation with a skilled operator, who is feeding paper, for instance, as fast as the machine can take care of it, but ordinarily there will be a slight rest between successive rotations on account of inability of the operator to supply the material. as fast as the machine is geared to operate,

Having thus described my invention, l

claim:

In v a machine of the character .described, the combinationwith a clutch, of a device for automatically throwing Athe vclutch out of engagement and a separate manually controlled device for operating the clutch to `throw it in and Iout periodically, there being a clutch lever operated `by both devices and a manually shiftable extension member therefor which is movable ltransversely of the clutch lever to cause the flatter to be Operated 'by either one of said devices.

2. The combination with a rotary clutch and power shaft, of a device for automati cally disengaging the clutch from the vshaft and a separate manually operable device for periodically engaging yand disengaging lthe. clutch to produce a single rotation for each operation ofthe device, there Vvbeing a clutch levercperated by either device and a member carried thereby, which when manually operated, will cause 'the lever .to be operated by either l'one vof said devices.

3. The combination with a clutch and a clutch lever, .of two separate controlling mechanisms therefor, lone of said :mechanisms ,being automatic and serving when operated toactcir-the 'lever to cause it to lil() f common means acting on both mechanisms nism being manual and operable to producexl a succession of periodic rotations ("ofthe clutch separated by periodsof rest, and a for rendering one lmechanism operable and rendering the other' mechanism inoperable.

4. The combination with a rotary! clutch and clutch lever,of a'device arrangedjto automatically disengage the clutch independently of the vnumber of revolutions thereof, a separate manually operated device operable to disengage the clutch afterla pre= determined rotary movementlthereof 'and means carried by the clutch lever forselectively causing either oneof 'said devices to operate the clutch. j Y

5. The combination with a rotary clutch of a member for shifting said clutch, means for causing the shifting of said memberat will to give a predetermined rotary move-L ment to the clutch, additional means acting independently of thev number of rotations of the clutch for automatically shifting it and means associated with said member for rendering one device ineffective while the other is operative.

automatic device for throwing the clutch out of operation, a separate manually controlled device adapted to be arranged to operate the shipper lever at will to Vgivethe clutch a periodic rotary movement and means associated with the shipper lever whereby the automatic device may be disconnected from the lever and the manually controlled device conditioned for single ro? ment of the clutch, a spring for holding said tation operation.

7. The combination yof a rotary clutch, a shipper lever therefor, a movable operating member for the shipper lever and movable in a plane transverse to the axis of the clutch, an automatically actuated member, and means whereby movement of said first mentioned member couples the shipper lever with the automatically actuated member to operate the clutch upon actua tion of said automatic member.

8. The combination of a rotary clutch,

a shipper lever therefor, a movable eXtension member for the shipper lever, an automatically actuated member, a separate manually operating kdevice for disengagingthe clutch and acting independently ofv the automatically actuated member and ,means whereby movement of said extension meinber couples the'shipper lever with the auto matically actuated membery and renders the manually operative device inoperative.

9. In a mechanism of thel character described, the combination with a clutch, ofy

an automatic device adapted to be coupled with the clutch for throwing the latter out of engagement, 1a `separate manual device adaptedk to f actuate the. clutch at the end of a predetermined movement, and `means,

whereby .the coupling ofthe automaticy device automatically disengages the manual device. f f l 10.y The combination of a rotary clutch, a shipper lever therefor, an automatically ac`l ytuated member, means for coupling. the

shipper lever therewith, a manually operated device fordisengaging the clutch, and i lmeansA connecting the coupling meansy with .the manual'devicewhereby the engagement of the coupling means disconnects the manual device. j i

i ll. Thecombination with a clutch, of a shipperlever, for shifting the same out of engagement, means forl coupling the shipper lever with an automatic device,fa movable arm f normally in position to Idisengage' the y .'clutchfmanual means for temporarily removing the arm from active position, said means yfor' coupling the shipper lever with the automatic device serving tol simultane-l -maybe brought by movement` about itsown pivot. j" y y f, v y13. `The combination with a clutch, Aof a shipper lever'therefor, means to automatically act'uate the same, a spring acting on the lever and tending to hold the clutch` engaged, an arm adapted to cause disengagearm in its active position, a manually operated trigger mechanism adapted to with draw the arm and allow its return before the clutchv has vmade a single rotation, and means whereby the act of moving the lever to active position with said automatic means,

mechanism. *y

14. The `combination with two membersto disengages the said arin from the trigger be k,clutched including a loose rotary pulley,

llO

of a shiftable collar having pins slidable into'and out of engagement with the pulley, a shifting means therefor, a cam arm adapted to cause ymovement of said collar into a position to withdraw the pins, manually operative means forcontrolling the position yof said arm, a'separate automatically opera.

tive means for independently controlling the clutch by acting on said shifting means and means for` connecting the automatically operative means to the shifting means and for maintaining said arm in an inoperative position.

15. The combination with two members to be clutched, including a loose rotary pulley and a shiftable collar having pins slidable into and out of engagement With the pulley,

of a shifting means thereorya caml arm-v adapt'ed tol cause movement of'said collar into position to Withdrawthe pins,A a spi-ing tending to move said arm into activef position, a trigger device operable to Withdraw the arm and to allow its return under spring. action, a separate yautomatic means Jfor operating` the clutch by acting on saidl shifting means and means vfor connecting the autoactive position, a foot pedal, mechanismV operated thereby adapted to'move the arm into inactive position, means whereby said` mechanism becomes automatically disenlgaged so that the arm may kreturn to its clutch engaging position independently of the return of the foot pedal,- a separate automatic means for operating theclutcli and means for connecting said automatic means roperatively to the clutch and for rendering said arml inactive. v

17. Tlie'combination of a clutch; a cam armpadapted to bexengaged thereby to cause the clutch to-pull itself out of engagement,l a spring tending to hold' thev arm in its active position, mechanism adapted tov move the arm into inactive-position and become automaticallygdisengaged so that the arm -may return under its spring action independently of 'sa-idy mechanism, a hand lever for throwing vthe clutch independently of the 'said arm, and mechanism controlled by the hand lever for connecting an automatic disengagerwith the; clutch and disconnecting said In :testimony whereof, I hereunto airix my signature.

` gcLiFToN vciiisiifoLM.. 

